Dental instrument



FIG. 1 illustrates a side view of the dental instrument, showing a first embodiment of our new and ornamental design;

FIG. 2 illustrates a back view thereof;

FIG. 3 illustrates an alternate side view thereof;

FIG. 4 illustrates a front view thereof;

FIG. 5 illustrates an enlarged bottom view thereof;

FIG. 6 illustrates an enlarged top view thereof; and,

FIG. 7 illustrates a perspective view thereof.

The portions of the dental instrument shown and described in broken lines in the figures attached hereto form no part of the claimed design. 

CLAIM The ornamental design for a dental instrument, as shown and described. 